William Taylor Barry was an American statesman, jurist and slave owner. He served as Postmaster General for most of the administration of President Andrew Jackson and was the only Cabinet member not to resign in 1831 as a result of the Petticoat affair.

The United States postmaster general (PMG) is the chief executive officer of the United States Postal Service (USPS). The PMG is responsible for managing and directing the day-to-day operations of the agency.